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hotplug: Verify hotplug.online_all()

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Check that all CPUs are effectively online after a call to
target.hotplug.online_all(), as hotplug issues are common and failure to
bring back up a CPU can be quite problematic.
This commit is contained in:
douglas-raillard-arm 2021-05-18 13:01:47 +01:00 committed by Marc Bonnici
parent b9374d530e
commit 796536d67d
1 changed files with 6 additions and 1 deletions
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7
devlib/module/hotplug.py
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@ -14,6 +14,7 @@
# #
from devlib.module import Module from devlib.module import Module
from devlib.exception import TargetTransientError
class HotplugModule(Module): class HotplugModule(Module):
@ -39,9 +40,13 @@ class HotplugModule(Module):
return [cpu for cpu in range(self.target.number_of_cpus) return [cpu for cpu in range(self.target.number_of_cpus)
if self.target.file_exists(self._cpu_path(self.target, cpu))] if self.target.file_exists(self._cpu_path(self.target, cpu))]
def online_all(self): def online_all(self, verify=True):
self.target._execute_util('hotplug_online_all', # pylint: disable=protected-access self.target._execute_util('hotplug_online_all', # pylint: disable=protected-access
as_root=self.target.is_rooted) as_root=self.target.is_rooted)
if verify:
offline = set(self.target.list_offline_cpus())
if offline:
raise TargetTransientError('The following CPUs failed to come back online: {}'.format(offline))
def online(self, *args): def online(self, *args):
for cpu in args: for cpu in args: